Respuesta :
Theory is a description or explanation of a fact or occurrence obtained through experimentation, testing, observation whereas law is a statement which gives/tells relationship between entities under certain conditions.
Kepler’s observation of planetary motion is a law not a theory because we assume certain things before deriving a mathematical expression. If you remember, the time period of a satellite moving around a planet is derived by assuming its orbit to be circular. We have "assumed the orbit to be circular" hence it is a law. Same with Einstein's relativity. Relativity is not a theory! You might have seen books titled "Einstein's Theory of Relativity" but it is "Einstein's law of Relativity" because he assumed certain axioms before putting forth his work. Hope this helped you.
Kepler’s observation of planetary motion is a law not a theory because we assume certain things before deriving a mathematical expression. If you remember, the time period of a satellite moving around a planet is derived by assuming its orbit to be circular. We have "assumed the orbit to be circular" hence it is a law. Same with Einstein's relativity. Relativity is not a theory! You might have seen books titled "Einstein's Theory of Relativity" but it is "Einstein's law of Relativity" because he assumed certain axioms before putting forth his work. Hope this helped you.
He calculated the gravitational force on orbiting bodies.
He debated with Copernicus who proposed the heliocentric model.
He examined the motions of planets through a telescope.
He analyzed data collected by Tycho Brahe.
